<!DOCTYPE html>
<html lang="zh">
<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
</head>
<body>
	<script>
		// 输入一个你的名字，弹出你的名字
		// var myname = prompt('请输入你的名字');
		// alert(myname);
		// 交换变量
		// var qiancheng = '辣条';
		// var wangjie = '方便面';
		// var luhui;
		// console.log(qiancheng);
		// console.log(wangjie);
		// luhui = '辣条';
		// qiancheng = '方便面';
		// wangjie = '辣条';
		// console.log(qiancheng);
		// console.log(wangjie);
		
	</script>
	
</body>
</html>